Messages in this thread Patch in this message | | | Subject | [PATCH] Enable /proc/diskstats for /dev/ramX | From | Ryo Onodera <> | Date | Mon, 19 Nov 2012 16:16:27 +0900 |
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Signed-off-by: Ryo Onodera <ryoqun@gmail.com> --- drivers/block/brd.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/block/brd.c b/drivers/block/brd.c index 531ceb3..181b2d7 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -332,6 +332,7 @@ static void brd_make_request(struct request_queue *q, struct bio *bio) sector_t sector; int i; int err = -EIO; + int cpu; sector = bio->bi_sector; if (sector + (bio->bi_size >> SECTOR_SHIFT) > @@ -348,6 +349,12 @@ static void brd_make_request(struct request_queue *q, struct bio *bio) if (rw == READA) rw = READ; + cpu = part_stat_lock(); + part_stat_inc(cpu, &brd->brd_disk->part0, ios[rw]); + part_stat_add(cpu, &brd->brd_disk->part0, sectors[rw], + bio_sectors(bio)); + part_stat_unlock(); + bio_for_each_segment(bvec, bio, i) { unsigned int len = bvec->bv_len; err = brd_do_bvec(brd, bvec->bv_page, len, -- 1.7.9.5
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